Question

एक कक्षा में(a²-a-20) बालिका तथा(a²-9a+20) बालक है! इनको अलग अलग समान संख्या के समूह में बांटा जाता है क्या कीजिए कि न्यूनतम कितने समूह बनेंगे तथा प्रत्येक समूह में कितने बालक तथा बालिकाओं रखेंगे

Answer 1

HELLO DEAR,

In a class (a²-a-20) girl and child (a²-9a + 20)! They are grouped into different groups of equal numbers, what should be the minimum number of groups and how many children and girls in each group





in a group of girls,

a²-a-20=0

a²-5a+4a-20=0

=> a(a-5) -4(a-5)=0

=> (a-5) (a-4)=0

=> a=5 or a=4


in group of boys

a² -9a + 20 = 0

=> a² - 5a - 4a +20=0

=> a( a-5) -4(a-5) =0

=> (a-4) (a-5) =0

=> (a-4)(a-5)=0

a=4 or a=5


hence, minimum no. of groups be 4
and no. of and 5 girls and children are in there